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DELHI DEVELOPMENT AUTHORITY<br />

UNIFIED TRAFFIC AND TRANSPORTATION INFRASTRUCTURE (PLG & ENGG) CENTRE<br />

( U T T I P E C )<br />

<strong>Guidelines</strong> <strong>and</strong> <strong>Design</strong> <strong>Specifications</strong><br />

<strong>For</strong><br />

<strong>Crash</strong> <strong>Barriers</strong>, Pedestrian Railings <strong>and</strong> Dividers<br />

2 nd Floor, VIKAS MINAR, NEW DELHI. Telefax: 23379042<br />

Email: <strong>uttipec</strong>wg.ia@gmail.com


UTTIPEC<br />

CONTENTS<br />

1. Introduction 4<br />

2. Guiding Principles 4<br />

3. <strong>Crash</strong> Barrier 4<br />

4. Pedestrian Railings/ Guard-rails 10<br />

5. Dividers 16<br />

6. Concluding Recommendations 20<br />

Members of Working Group I-B 21<br />

Members of the Sub-Group 21<br />

Acknowledgements 21<br />

References 22<br />

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LIST OF FIGURES<br />

Fig 1: Barrier Placement 6<br />

Fig 2: Typical Detail of thrie beam section 6<br />

Fig 3: Barrier cast-in-situ design 7<br />

Fig 4: Barrier cast-in-situ design 8<br />

Fig 5: A typical layout of four arm channelised intersection with zebra crossing <strong>and</strong> railing barrier.<br />

11<br />

Fig 6: Typical RCC pedestrian ‘Guardrail’ 12<br />

Fig 7: Typical RCC pedestrian ‘Guardrail’ 13<br />

Fig 8: Steel Guardrails 13<br />

Fig 9: Concrete Screening 13<br />

Fig 10: Steel <strong>Barriers</strong>, Railing & Fencing 14<br />

Fig 11: Steel <strong>Barriers</strong>, Railing & Fencing 14<br />

Fig 12: Existing MS Railing at Lodhi Road 15<br />

Fig 13: Existing MS Railing at Aurobindo Marg 15<br />

Fig 14: Parabolic Divider 16<br />

Fig 15: Barrier cast-in-situ design 17<br />

Fig 16: Kerb Stone with railing in between 17<br />

Fig 17: Type design for reflective traffic cone 18<br />

Fig 18: High density traffic 18<br />

Fig 19: Water filled Jerry can 18<br />

Fig 20: Typical design of a movable central divider 19<br />

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1. Introduction<br />

With an exponential growth of vehicular traffic, the pedestrians in the city are often exposed<br />

to accidents <strong>and</strong> are marginalized in the mobility network. The pedestrians are invariably<br />

channelised on the narrow footpaths which sometimes are encroached. They are expected to use<br />

the pedestrian underpasses or foot-over bridges to cross the high volume traffic roads. With the<br />

increasing flyovers <strong>and</strong> speeds, the frequency of accidents involving the pedestrians has<br />

increased.<br />

With the objective to ensure the entitlements of the pedestrians in terms of mobility, safety<br />

<strong>and</strong> convenience, slow <strong>and</strong> fast vehicular traffic crash barriers, dividers <strong>and</strong> pedestrian’s railings<br />

on the central verge are provided, together with Foot Over Bridges (FOB), sub-ways etc. Many<br />

times the FOB’s <strong>and</strong> sub-ways are underused as they cause inconvenience <strong>and</strong> insecurity to the<br />

users. As a result, the pedestrians are seen jaywalking <strong>and</strong> climbing over the barriers <strong>and</strong> railings<br />

in order to cross the high intensity, high speed roads <strong>and</strong> flyovers. As such, it is necessary to<br />

provide wide <strong>and</strong> safer pedestrian corridors. In the areas/ roads with high pedestrian traffic, it may<br />

be necessary to provide pedestrian corridors at grade while the motorised vehicles move up <strong>and</strong><br />

down.<br />

This may be possible by raising the carriageway of the road by about 2.4 meters, so that<br />

pedestrians keep moving freely at the ground level for crossing the roads. Such facility should be<br />

provided in front of the Railway Stations, Metro Stations, ISBT, Exhibition Ground, large<br />

commercial center <strong>and</strong> office complexes (such as ITO, RK Puram, Central Secretariat, etc.)<br />

2. Guiding Principles<br />

2.1 To ensure <strong>and</strong> safeguard pedestrian Right of Way, safety <strong>and</strong> accessibility, including<br />

wheelchairs.<br />

2.2 To ensure vehicle <strong>and</strong> driver’s safety<br />

2.3 To promote segregated traffic movement for various types of traffic <strong>and</strong> categories of vehicles<br />

2.4 To offer the flexibility for adjustment of central verge/ barrier/ railing according to directional<br />

volume of traffic.<br />

2.5 To synchronise design with the road users/ pedestrians behavior <strong>and</strong> needs<br />

2.6 To evolve design with sensitivity to the aspects of aesthetics, sight lines, streetscape, lighting<br />

<strong>and</strong> heritage.<br />

2.7 To consider the cost/ economy factors<br />

2.8 Ease of maintenance<br />

3. <strong>Crash</strong> Barrier<br />

3.1 Definition<br />

<strong>Crash</strong> barriers are designed to withst<strong>and</strong> the impact of vehicles of certain weights at certain<br />

angle while traveling at the specified speed. They are expected to guide the vehicle back on the<br />

road while keeping the level of damage to vehicle as well as to the barriers within acceptable<br />

limits.<br />

Ideally a crash barrier should present a continuous smooth face to an impacting vehicle, so<br />

that the vehicle is redirected, without overturning, to a course that is nearly parallel to the barrier<br />

face <strong>and</strong> with a lateral deceleration, which is tolerable to the motorist. To achieve these aims the<br />

vehicle must be redirected without rotation about both its horizontal or vertical axis (that is,<br />

without ‘spinning out’ or overturning), <strong>and</strong> the rate of lateral deceleration must be such as to<br />

cause the minimum risk of injury to he passengers.<br />

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3.2 Objectives<br />

i. Reducing the likelihood of a vehicle crossing the central reserve <strong>and</strong> reaching the opposite<br />

carriageway.<br />

ii. Minimising the damage to a barrier <strong>and</strong> vehicle, following vehicle strike <strong>and</strong> also reducing the<br />

risk to the workforce <strong>and</strong> work related congestion.<br />

iii. Being maintenance-free <strong>and</strong> having a life of 25 to 50 years.<br />

3.3 Types of <strong>Crash</strong> <strong>Barriers</strong><br />

In view of the above factors, various options should be considered in evolving the need,<br />

location <strong>and</strong> design of the crash barriers, central railings <strong>and</strong> dividers.<br />

i. No provision, vehicular carriageway raised for pedestrian walkway at grade.<br />

ii. 15 cm to 25 cm high curb stone.<br />

iii. Flexible/ removable/ sinking divider or railing.<br />

iv. Water filled plastic jerry can safety barrier.<br />

v. Reinforced Glass/ Plastic/ Rubber railing.<br />

vi. Jersey <strong>Barriers</strong> (concrete) <strong>and</strong> its variations (constant slope, F shape, Jali, etc).<br />

vii. Steel concrete barriers, Railings, Fencing etc.<br />

viii. Hybrid combining two or more options<br />

According to IRC, following are the categories of crash barriers:<br />

Category Application Containment for<br />

P-1: Normal Containment Bridges carrying expressway, 15 kN vehicle at 110 km/h,<br />

or equivalent<br />

<strong>and</strong> 20 degree angle of impact<br />

P-2: Low Containment All other bridges except bridge 15 kN vehicle at 80 km/h, <strong>and</strong><br />

over railways<br />

20 degree angle of impact<br />

P-3: High Containment At hazardous <strong>and</strong> high risk 30 kN vehicle at 60 km/h, <strong>and</strong><br />

locations, over busy railway<br />

lines, complex interchanges,<br />

etc.<br />

20 degree angle of impact<br />

According to the IRC (6-2000) the crash barriers shall be provided at the following locations:<br />

i. <strong>For</strong> bridges without foot paths, concrete crash barriers shall be provided at the edge of<br />

the carriageway.<br />

ii. The type design for the crash barriers may be adopted as per IRC:5. The design<br />

loading for the barriers shall be as per Clause 209.7 of IRC:6.<br />

iii. <strong>For</strong> bridges with foot paths, pedestrian railing shall be provided on the outer side of<br />

footpath.<br />

iv. The railings of existing bridges shall be replaced by crash barriers, where specified in<br />

Schedule-B of the Concession Agreement.<br />

v. Parapets/ Railings of the existing bridges/ culverts to be repaired/ replaced shall be<br />

specified in Schedule-B of the Concession Agreement.<br />

In the urban environment traffic barriers are needed on urban motorways <strong>and</strong> primary<br />

distributors, where speeds are high <strong>and</strong> dangerous.<br />

Traffic barriers should be erected on both sides of roads on embankments 6m high or more<br />

<strong>and</strong> on the outer edge of the roads where the radius is 850m or less <strong>and</strong> the embankment height<br />

3m or more.<br />

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<strong>Barriers</strong> may also be needed on an embankment where there is road, railway or river at the<br />

foot, on bridges with lightly built parapets or to protect bridge piers or other obstruction on the<br />

central reserve or verges.<br />

This is recommended on embankment, ramps to flyovers <strong>and</strong> interchanges <strong>and</strong> high speed<br />

corridors in open area. (Not recommended for highly built up area with pedestrian <strong>and</strong> cycle<br />

traffic). (Fig 1)<br />

End Treatment: It is important to provide suitable <strong>and</strong> treatment for such type of barrier in view<br />

of safety. The ends of this barrier must either be embedded into ground by tapering down or<br />

these must be embedded into the rigid parapet wall of a culvert or specially prepared rigid<br />

parapet fir the purpose of imbedding.<br />

Fig 1: Barrier Placement<br />

Source: IRC: SP: 73-2007<br />

Fig 2: Typical Detail of thrie beam section<br />

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Source: IRC: SP: 73-2007<br />

<strong>Crash</strong> barriers can be rigid type, using cast-in-situ precast reinforced concrete panels, or of<br />

flexible type constructed using metallic cold-rolled <strong>and</strong>/ or hot-rolled sections, the metallic type,<br />

called semi-rigid type, suffer large dynamic deflection of the order of 0.9 to 1.2m, or on impact,<br />

whereas, the 'rigid' concrete type suffer comparatively negligible deflection (Fig 3). The efficacy<br />

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of the two types of barriers is established on the basis of full size tests carried out by the<br />

laboratories specializing in such testing. Due to the complexities of the structural action the value<br />

of impact force cannot be quantified.<br />

Fig 3: Barrier cast-in-situ design<br />

Source: IRC: SP: 73-2007<br />

A certificate from such laboratory can be the only basis of acceptance of the semi-rigid type,<br />

in which case all the design details <strong>and</strong> construction details tested by the laboratory are to be<br />

followed in to without modifications, <strong>and</strong> without changing relative strengths <strong>and</strong> positions of any<br />

of the connections <strong>and</strong> elements.<br />

<strong>For</strong> rigid barrier, at the end compulsory left out <strong>and</strong> right out signage be placed as per IRC<br />

67:2001. The end of these rigid barriers may be treated with retro reflective tape or paint for night<br />

visibility <strong>and</strong> distant visibility.<br />

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Fig 4: Barrier cast-in-situ design<br />

Source: IRC: SP: 73-2007<br />

3.4 <strong>Crash</strong> <strong>Barriers</strong> need to be provided at the following locations:<br />

<strong>Crash</strong>/ Safety barrier of rigid, flexible or semi rigid type, in accordance with MOSRT&H<br />

guidelines/ circular shall be provided at following locations:<br />

i. Where height of embankment is 3m or more,<br />

ii. Where height of embankment is retained by a retaining structure,<br />

iii. Between main carriageway <strong>and</strong> cycle track (if any) in bridges.<br />

iv. At hazardous location identified through safety audit or at the edge of the flyovers/ bridges.<br />

3.5 <strong>Design</strong> Requirements<br />

According to IRC 6-2000, the below table states the minimum requirement for design of the crash<br />

barriers:<br />

Item Requirement<br />

Parapet Type<br />

P1 In-situ/ P2 In-situ/ P3 In-situ<br />

Precast Precast<br />

1 Shape Shape on traffic side to be as per IRC:5, or New Jersey<br />

(NJ) Type of 'F' Shape designated thus by AASTHO<br />

2 Minimum grade of concrete M-40 M-40 M-40<br />

3 Minimum thickness of RCC<br />

wall (at top)<br />

175 mm 175 mm 250 mm<br />

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4 Minimum moment of<br />

resistance at base of the wall<br />

[see note (i)] for bending in<br />

vertical plane with<br />

reinforcement adjacent to the<br />

traffic face [see note (ii)].<br />

5 Minimum moment of<br />

resistance for bending in<br />

horizontal plane with<br />

reinforcement adjacent to<br />

outer face [see note (ii)].<br />

6 Minimum moment of<br />

resistance of anchorage at<br />

the base of a pre-cast<br />

reinforced concrete panel.<br />

15 kNm/m 7.5 kNm/m 100 kNm/m for<br />

end section <strong>and</strong><br />

75 kNm/m for<br />

7.5 kNm/m 3.75 kNm/m<br />

intermediate<br />

section [see note<br />

(iii)]<br />

40 kNm/m<br />

22.5 kNm/m 11.25 kNm/m Not Applicable<br />

7 Minimum transverse shear<br />

resistance at vertical joints<br />

between precast panels or at<br />

vertical joints made between<br />

lengths or in-situ parapet.<br />

44 kNm/m 22.5 kNm/m Not Applicable<br />

8 Minimum height 900 mm 900 mm 1550 mm<br />

Source: IRC 6-2000<br />

Notes:<br />

i. The base of wall refers to horizontal sections of the parapet within 300 mm above the<br />

adjoining paved surface level. The minimum moments of resistance shall reduce linearly<br />

from the base of wall value to zero at top of the parapet.<br />

ii. In addition to the main reinforcement, in items 4 <strong>and</strong> 5 above, distribution steel equal to<br />

50 per cent of the main reinforcement shall be provided in the respective faces.<br />

iii. <strong>For</strong> design purpose the parapet Type P3 shall be divided into end sections extending a<br />

distance not greater than 3.0 m from ends of the parapet <strong>and</strong> intermediate sections<br />

extending along remainder of the parapet.<br />

iv. If concrete barrier is used as a median divider, the steel is required to be placed on the<br />

both sides.<br />

v. In case of P3, In-situ type, a minimum horizontal transverse shear resistance of 135<br />

kNm/m shall be provided.<br />

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4. Pedestrian Railings/ Guard-rails<br />

4.1 Pedestrian Railing between Footpath <strong>and</strong> Carriageway/ Central Verge<br />

Where considerable pedestrian traffic is expected, railing in the median of the road <strong>and</strong><br />

reinforced concrete crash barrier is provided separating the vehicular <strong>and</strong> pedestrian traffic. <strong>For</strong><br />

rigid railing, the strength should be equivalent to that of rigid RCC type. <strong>For</strong> areas of low intensity<br />

of pedestrian traffic, semi-rigid type of railings, such as concrete, steel, etc. can be adopted.<br />

4.2 Objectives<br />

Pedestrian guard-rails in the vicinity of zebra crossing should be of sufficient length to deter<br />

pedestrians from crossing the road at any arbitrary point along the road. Night time visibility of<br />

zebra crossing is of vital importance <strong>and</strong> this can be achieved through proper lighting of the<br />

intersection area.<br />

4.3 Location<br />

Use of pedestrian guard-rails could be considered under the following situations:<br />

i. Hazardous locations on straight stretches<br />

In particularly busy reaches where the road is congested <strong>and</strong> vehicles move at a fast pace,<br />

guard-rails should be provided on both sides of the carriageway so as to segregate <strong>and</strong><br />

channelise the pedestrians to the planned walking <strong>and</strong> crossing facilities.<br />

ii. Schools<br />

Provision of guard-rails near schools where children would other-wise run straight into the<br />

road is essential. If there is a pedestrian crossing or a school crossing patrol nearby, the<br />

guard-rails must be extended up to sufficient length (150 M) in either side of road.<br />

iii. Bus Stations/stops, Metro Railway Stations, etc.<br />

Provision of guard-rails along side-walks with suitable pedestrian crossing facility at bus<br />

stops, railway stations <strong>and</strong> other areas of heavy pedestrian activity such as cinema houses,<br />

stadiums, etc. are recommended for guiding pedestrian’s movement <strong>and</strong> enhancing safety in<br />

such areas.<br />

iv. At Junctions/Intersections<br />

Railing barriers should be provided to prevent people from crossing the junctions diagonally<br />

at signalised/ unsignalised intersections. The barrier must open only at planned crossing<br />

facility (at the zebra crossing). It is recommended to put blinkers before the zebra crossing<br />

which should be made m<strong>and</strong>atory. At both signalised <strong>and</strong> unsignalised junctions the railing<br />

barrier should be provided for sufficient length to guide the pedestrians to the nearest<br />

planned pedestrian crossing. Pedestrian guard-rails in the vicinity of zebra should be of<br />

sufficient length to deter pedestrians from crossing the road at any arbitrary point along the<br />

road. (Fig 5)<br />

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Fig 5: A typical layout of four arm channelised intersection with zebra crossing <strong>and</strong> railing barrier.<br />

Source: IRC: 103-1988<br />

As the guard-rails would confine the movement of pedestrians to the footpath, it is obligatory that<br />

sufficient width of footpath be made available for the use of pedestrians.<br />

v. Overpass Subway, etc.<br />

Guard-rails may be necessary at these locations in order to guide <strong>and</strong> compel the pedestrians to<br />

use the facilities provided for them.<br />

vi. Central verges/ Footpaths<br />

Where there is a central verge or a median with frequent pedestrian crossing to either side,<br />

guard-rails can be erected within it to deter the pedestrians from attempting a crossing.<br />

Where considerable pedestrian traffic is expected, railing between the footpath <strong>and</strong> carriageway<br />

<strong>and</strong> / or on the median of the road is provided separating the vehicular <strong>and</strong> pedestrian traffic.<br />

4.4 <strong>Design</strong> Requirements <strong>and</strong> Options<br />

As the guard-rails would confine the movement of pedestrians to the footpath, it is obligatory<br />

that sufficient width of footpath be made available for the use of pedestrians. Railing should not<br />

be placed in case the width of side walk is less than 1.2 M.<br />

The design of railings/ guard rails should be consistent for a particular corridor/ area. It should<br />

be as far as possible uniform <strong>and</strong> relate with the boundary walls, urban character <strong>and</strong> street<br />

furniture. The design of guard-rails should be neat, simple in appearance <strong>and</strong>, as far as possible,<br />

v<strong>and</strong>al proof. Two aspects which need special consideration are the height of h<strong>and</strong>-rail <strong>and</strong> the<br />

obstruction to visibility. The height should be sufficient so as to deter people from climbing over<br />

it. The visibility of the approaching vehicles by the pedestrians as well as the visibility of the<br />

pedestrians by the drivers of the approaching vehicles should be adequate. The railings should<br />

not, therefore, have any thick horizontal member, other than the baluster to achieve the desired<br />

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objective. The guard-rails should be of sturdy but slender design. A tapered <strong>and</strong> thick base/<br />

ends to support the railing will prevent the pedestrians to climb over the railing to cross the road.<br />

Pedestrian guard-rails in reinforced cement concrete have also been found to be generally<br />

suitable in urban situations. Iron tubes, steel channeled sections <strong>and</strong> pipes may also be adopted<br />

so as to fit in with the environment or for better aesthetics. These can, however, be costly <strong>and</strong><br />

may also need higher level of maintenance. Long lengths of guard rails give any environment an<br />

undue effect of severe confinement <strong>and</strong> regimentation.<br />

When pedestrian <strong>and</strong> vehicle separation is desirable, thought should be given to possible<br />

alternatives rather than specifying guard rails as a matter of course. Continuous central refuges,<br />

small aqueducts, planters, bollards, trees, are all ways in which pedestrians can be screened<br />

from vehicles, <strong>and</strong> are infinitely preferable to the usual guard rails which seem to be springing up<br />

everywhere. If there is absolutely no alternative, guard rails should be erected at points of<br />

particular danger to pedestrians. The height of the pedestrian railing <strong>and</strong> divider should be such<br />

that it is a deterrent for pedestrian to climb over <strong>and</strong> jaywalking. The dividers/ central verge<br />

should be so designed to make it impossible for the pedestrians to walk over it.<br />

Occasionally, gaps in guard-rails may have to be provided to accommodate trees, pillar<br />

boxes, sign posts, electrical control boxes etc. located near the side-walk. However, these<br />

should be suitably designed to prevent pedestrians or little children from squeezing through to<br />

cross the carriageway. Preferably, the guard-rails should be set back from edge of the<br />

carriageway by at least 150 mm.<br />

Central dividers on wide roads ensure that vehicles confine their movements only to the<br />

correct carriageway, thus avoiding any conflict with traffic from the opposite direction. The rails<br />

over central dividers can be provided to ensure that pedestrians do not cross erratically or spill<br />

over the carriageway.<br />

Fig 6: Typical RCC pedestrian ‘Guardrail’<br />

Source: IRC: 103-1988<br />

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It is recommended the length of the railing barrier should not be more than 200 M. The minimum<br />

length of railing barrier should be 50 M. RCC pedestrian guard-rails may be used in thickly<br />

populated area of Trans Yamuna <strong>and</strong> outer areas of Delhi, whereas mild steel/ steel railing/<br />

fencing of “Tubular Section” may be used as guard-rails for pedestrians in busy commercial <strong>and</strong><br />

institutional area (MCD area) to suit with the aesthetics <strong>and</strong> urban environment of the area.<br />

Fig 7: Typical RCC pedestrian ‘Guardrail’<br />

Source: IRC: 103-1988<br />

Fig 8: Steel Guardrails<br />

Source: GLC<br />

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Fig 9: Concrete Screening<br />

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Fig 10: Steel <strong>Barriers</strong>, Railing & Fencing<br />

Source: GLC<br />

Fig 11: Steel <strong>Barriers</strong>, Railing & Fencing<br />

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Fig 12: Existing MS Railing at Lodhi Road<br />

Fig 13: Existing MS Railing at Aurobindo Marg<br />

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5. Dividers<br />

5.1 Dividers<br />

Dividers are usually provided to earmark the segregated movement of a particular type/<br />

category of traffic, such as, segregating through carriage way from a service road for local traffic,<br />

segregating light <strong>and</strong> heavy traffic, segregating through traffic from turning traffic <strong>and</strong> dedicated<br />

BRT corridor <strong>and</strong> corridors for non-motorised transport (cycles, rickshaws etc.). The dividers can<br />

be within form of low height central verge, curb, railing, etc. which can be either permanent (steel,<br />

concrete etc) or flexible/ movable, shiftable such as rubberised cones, precast curbs <strong>and</strong><br />

electrically/ mechanically operated shiftable divider railings.<br />

5.2 Objectives<br />

Central dividers on wide roads ensure that vehicles confine their movements only to the<br />

correct carriageway, thus avoiding any conflict with traffic from the opposite direction. The rails<br />

over central dividers can be provided to ensure that pedestrians do not cross erratically or spill<br />

over the carriageway.<br />

5.3 Types of Dividers<br />

5.3.1 Central Verge/ Concrete Curb/ Parabolic Divider<br />

Usually wide central verge are provided as dividers within right of way. This encourages<br />

unrestricted <strong>and</strong> dangerous movement <strong>and</strong> crossing of pedestrians particularly in built up area/<br />

markets. This also restrict the effective carriage way.<br />

In certain areas where wide space is not available for central verge, narrow concrete curb are<br />

useful <strong>and</strong> may be provided. The concrete curb is usually in the shape of parabolic divider.<br />

Parabolic dividers <strong>and</strong> flower-beds which have a height of nearly 1 meter ensure pedestrian<br />

discipline. As the railings in the middle of roads are very vulnerable to accidents, parabolic<br />

dividers <strong>and</strong> flower-beds serve the same purpose more efficiently, besides improving the<br />

environment. A typical parabolic divider is shown in the Fig. 19. Traffic cones can be used for<br />

temporary segregation of traffic.<br />

Fig 14: Parabolic Divider<br />

Source: IRC<br />

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Fig 15: Barrier cast-in-situ design<br />

5.3.2 Dividers with Railing over concrete curb<br />

With view to discourage the pedestrians from jaywalking <strong>and</strong> crossing the central verge,<br />

railings are provided over a narrow concrete curb. The height <strong>and</strong> width of the concrete curb is<br />

kept which does not allow pedestrians to walk <strong>and</strong> climb the railing. This also saves the valuable<br />

carriage way space.<br />

Fig 16: Kerb Stone with railing in between<br />

5.3.3 Temporary arrangements such as Plastic/ Fibre cones, etc.<br />

It is often witnessed as that in Delhi to cope up with segregated movement of traffic various<br />

temporary arrangements are put up such as plastic/ fibre cones, steel panels, plastic jerry canes,<br />

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etc. as traffic dividers. These offer a temporary solution, which need to be considered together<br />

with pedestrian safety, infrastructure proper arrangement <strong>and</strong> aesthetics.<br />

Fig 17: Type design for<br />

reflective traffic cone<br />

Fig 18: High density traffic<br />

Barrier/ divider<br />

Source: IRC<br />

Traffic cones<br />

Rubber or flexible plastic<br />

Fig 19: Water filled Jerry can<br />

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5.3.4 Shiftable/ Moveable Divider<br />

Keeping in view the tidal flow pattern of Delhi traffic, where there is a wide variations in<br />

directional traffic flow traffic flow during morning <strong>and</strong> evening peak periods, shiftable dividers can<br />

provide a greater efficiency <strong>and</strong> capacity enhancement of the carriage way in the required<br />

direction of heavier flow, within the existing right of ways. Such dividers can be manually placed<br />

in the form of modular steel units or electrically/ mechanically operated systems installed under<br />

the road, which facilitate sinking of the dividers within the road for dividing the lanes as per the<br />

traffic volume requirements (Fig: 21) .<br />

Fig 20: Typical design of a movable central divider<br />

5.4 Placement / Location of Dividers<br />

The location <strong>and</strong> placement of dividers is important to provide at wide pedestrian corridors in<br />

the areas/ roads with high pedestrian traffic, in order to secure pedestrians.<br />

Parabolic type is suitable for congested built up area, where there is limited narrow right of<br />

way. Plastic fibre cones <strong>and</strong> shiftable/ moveable dividers mat be used for management of traffic<br />

during peak period, special occasions <strong>and</strong> tidal flow management. While wider medians/ dividers<br />

are recommended for newly developed areas with sufficient right of way.<br />

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6. Concluding Recommendations<br />

i. It is recommended on embankment, ramps to flyovers <strong>and</strong> interchanges <strong>and</strong> high speed<br />

corridors in open area. (not recommended for highly built up area with pedestrian <strong>and</strong> cycle<br />

traffic.)<br />

ii. End Treatment: It is important to provide suitable <strong>and</strong> treatment for such type of barrier in<br />

view of safety. The ends of this barrier must either be embedded into ground by tapering<br />

down or these must be embedded into the rigid parapet wall of a culvert or specially<br />

prepared rigid parapet fir the purpose of imbedding.<br />

iii. <strong>For</strong> rigid barrier, at the end compulsory left out <strong>and</strong> right out signage be placed as per IRC<br />

67:2001. The end of these rigid barriers may be treated with retro reflective tape or paint for<br />

night visibility <strong>and</strong> distant visibility.<br />

iv. Where considerable pedestrian traffic is expected, railing between the footpath <strong>and</strong><br />

carriageway <strong>and</strong> / or on the median of the road is provided separating the vehicular <strong>and</strong><br />

pedestrian traffic.<br />

v. It is recommended to put blinkers before the zebra crossing which should be made<br />

m<strong>and</strong>atory. At both signalised <strong>and</strong> unsignalised junctions the railing barrier should be<br />

provided for sufficient length to guide the pedestrians to the nearest planned pedestrian<br />

crossing. Pedestrian guard-rails in the vicinity of zebra should be of sufficient length to<br />

deter pedestrians from crossing the road at any arbitrary point along the road.<br />

vi. As the guard-rails would confine the movement of pedestrians to the footpath, it is<br />

obligatory that sufficient width of footpath be made available for the use of pedestrians.<br />

vii. It is recommended the length of the railing barrier should not be more than 200 M. The<br />

minimum length of railing barrier should be 50 M. RCC pedestrian guard-rails may be used<br />

in thickly populated area of Trans Yamuna <strong>and</strong> outer areas of Delhi, whereas mild steel/<br />

steel railing/ fencing of “Tubular Section” may be used as guard-rails for pedestrians in<br />

busy commercial <strong>and</strong> institutional area (MCD area) to suit with the aesthetics <strong>and</strong> urban<br />

environment of the area.<br />

viii. Parabolic type is suitable for congested built up area, where there is limited narrow right of<br />

way. Plastic fibre cones <strong>and</strong> shiftable/ moveable dividers mat be used for management of<br />

traffic during peak period, special occasions <strong>and</strong> tidal flow management. While wider<br />

medians/ dividers are recommended for newly developed areas with sufficient right of way.<br />

ix. It was suggested that the new road alignment project may include detailed design of<br />

median / crash barriers <strong>and</strong> railings.<br />

The “<strong>Guidelines</strong> <strong>and</strong> <strong>Specifications</strong> for <strong>Crash</strong> <strong>Barriers</strong>, Pedestrians Railings <strong>and</strong> Dividers”<br />

was approved in the 20 th UTTIPEC Governing Body meeting held on 15.01.2010<br />

under the chairmanship of Hon’ble Lt. Governor, Delhi.<br />

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Members of Working Group I-B<br />

Chairman Sh. A.K. Bajaj –E.M. (DDA)<br />

Co-Chairman Sh. Ashok Kumar – Commr.(Plg.)DDA /<br />

Dr.S.P.Bansal, Addl.Commr.(Plg)<br />

Nodal Officer Sh. A.K. Jain – Advisor UTTIPEC (<strong>For</strong>mer)<br />

Convener Sh. Sabyasachi Das, Joint Dir. (Planning) UTTIPEC-III<br />

1. Sh. R P Indoria Secretary – Indian Road Congress<br />

2. Mr. S. Gangopadhay Head (T&T) – Central Road Research Institute<br />

3. Sh. Sanjiv Sahai MD (DIMTS)<br />

4. Sh. Vijay An<strong>and</strong> Director (Projects) – Delhi Metro Rail Corporation<br />

5. Sh. A.K. Sinha Nominee of Engineer-in-Chief-Public Works Department<br />

6. Sh. Ravi Dass Engineer-in-Chief – Municipal Corporation of Delhi<br />

7. Sh. Ramesh Raina Chief Engineer – New Delhi Municipal Council<br />

8. Engineer Member National Highway Authority of India<br />

9. Sh. A.K. Lahoti Chief Engineer - Northern Railways<br />

10. Nominated Member Ministry of Surface Transport<br />

11. Nominated Member Ministry of Shipping, Road Transport <strong>and</strong> Highways<br />

12. Sh. T.K. Malhotra President – AAUI<br />

13. Sh. Rohit Baluja President – Institute of Road Training Education<br />

14. Sh. Pavan Gupta Consultant – Institutional System Planning Centre<br />

Members of the Sub-Group<br />

1. Sh. A.K. Jain <strong>For</strong>mer Advisor UTTIPEC<br />

2. Sh. J.B. Kshirsagar Chief Planner – Town & Country Planning Organisation<br />

3. Representative of E-in-Chief Public Works Department/ SE/ EE<br />

4. Representative of E-in-Chief Municipal Corporation of Delhi/ EE(I) & EE (Civil)<br />

5. Secretary General IRC/ Addl. Dir.<br />

6. Representative of Chief Engineer New Delhi Municipal Corporation/ Ex. Engineer<br />

7. Sh. G R Shiromani Chief Engineer (<strong>Design</strong>) – DDA<br />

8. Sh. S.N. Srivastava, Jt. Commr. Of Police (Traffic)<br />

9. Sh. T.K. Malhotra President – AAUI<br />

10. Sh. Vinod Sakle Director, (Plg) UTTIPEC, DDA<br />

11. Sh. Rohit Baluja President – Institute of Road Training Education<br />

12. Sh. Ashok Bhattacharjee Jt. Director (Plg), UTTIPEC - I<br />

13. Sh. Pavan Gupta Consultant – Institutional System Planning Centre<br />

14. Sh. Amit Madholia Consultant – UTTIPEC, DDA<br />

Acknowledgements<br />

1. Sh. Subhash Ch<strong>and</strong> Sr. Scientist, CRRI<br />

2. Sh. P. K. Behera Jt. Director, UTTIPEC - II<br />

3. Sh. N. R. Aravind Dy. Director (Plg), UTTIPEC<br />

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References<br />

Delhi Development Authority (2007), Master Plan for Delhi – 2021, New Delhi.<br />

MoUD (2006), National Urban Transport Policy-2006<br />

IRC 103-1988, <strong>Guidelines</strong> for Pedestrian Facilities<br />

IRC 6-2000, St<strong>and</strong>ard <strong>Specifications</strong> <strong>and</strong> Code of Practice for Road Bridges, Section – II<br />

IRC: SP: 73-2007, Manual of St<strong>and</strong>ard & <strong>Specifications</strong> for Two Laning of State Highways<br />

Cart Wright, RM (1980), The <strong>Design</strong> of Urban Space, The Architecture Press, London<br />

Chiara, J.D, Lee Koppleman, Urban Planning <strong>and</strong> <strong>Design</strong> Criteria, Van Nostr<strong>and</strong>, New York.<br />

Draft <strong>Guidelines</strong> <strong>and</strong> <strong>Specifications</strong> for <strong>Crash</strong> <strong>Barriers</strong>, Pedestrian Railings <strong>and</strong> Dividers<br />

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